package com.nbsaas.boot.plugin.payment;

import com.nbsaas.boot.plugin.Plugin;
import com.nbsaas.boot.plugin.PluginContext;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;

/**
 * 支付插件
 * 支持多种支付方式
 */
public class PaymentPlugin implements Plugin {
    private PluginContext context;
    private final Map<String, PaymentConfig> paymentConfigs = new ConcurrentHashMap<>();
    private final Map<String, PaymentRecord> paymentRecords = new ConcurrentHashMap<>();
    
    @Override
    public String getId() {
        return "payment-plugin";
    }
    
    @Override
    public String getName() {
        return "支付插件";
    }
    
    @Override
    public String getVersion() {
        return "1.0.0";
    }
    
    @Override
    public String getDescription() {
        return "提供多种支付方式的支持，包括支付宝、微信支付等";
    }
    
    @Override
    public void init(PluginContext context) {
        this.context = context;
        System.out.println("支付插件初始化: " + getName());
    }
    
    @Override
    public void start() {
        System.out.println("支付插件启动: " + getName());
    }
    
    @Override
    public void stop() {
        System.out.println("支付插件停止: " + getName());
    }
    
    /**
     * 配置支付方式
     * @param type 支付类型
     * @param config 配置信息
     */
    public void configurePayment(String type, PaymentConfig config) {
        paymentConfigs.put(type, config);
    }
    
    /**
     * 创建支付订单
     * @param type 支付类型
     * @param amount 支付金额
     * @param subject 订单主题
     * @param description 订单描述
     * @return 支付结果
     */
    public PaymentResult createPayment(String type, BigDecimal amount, String subject, String description) {
        // 检查支付配置
        PaymentConfig config = paymentConfigs.get(type);
        if (config == null) {
            return PaymentResult.error("未配置支付方式: " + type);
        }
        
        // 创建支付记录
        String orderId = UUID.randomUUID().toString();
        PaymentRecord record = new PaymentRecord(
            orderId,
            type,
            amount,
            subject,
            description,
            LocalDateTime.now()
        );
        paymentRecords.put(orderId, record);
        
        // 根据支付类型创建支付
        try {
            switch (type) {
                case "alipay":
                    return createAlipayPayment(record, config);
                case "wechat":
                    return createWechatPayment(record, config);
                default:
                    return PaymentResult.error("不支持的支付方式: " + type);
            }
        } catch (Exception e) {
            return PaymentResult.error("创建支付失败: " + e.getMessage());
        }
    }
    
    /**
     * 查询支付状态
     * @param orderId 订单ID
     * @return 支付状态
     */
    public PaymentStatus queryPaymentStatus(String orderId) {
        PaymentRecord record = paymentRecords.get(orderId);
        if (record == null) {
            return PaymentStatus.NOT_FOUND;
        }
        
        // 根据支付类型查询状态
        try {
            switch (record.getType()) {
                case "alipay":
                    return queryAlipayStatus(record);
                case "wechat":
                    return queryWechatStatus(record);
                default:
                    return PaymentStatus.NOT_FOUND;
            }
        } catch (Exception e) {
            return PaymentStatus.ERROR;
        }
    }
    
    /**
     * 退款
     * @param orderId 订单ID
     * @param amount 退款金额
     * @return 退款结果
     */
    public RefundResult refund(String orderId, BigDecimal amount) {
        PaymentRecord record = paymentRecords.get(orderId);
        if (record == null) {
            return RefundResult.error("订单不存在");
        }
        
        // 检查支付状态
        PaymentStatus status = queryPaymentStatus(orderId);
        if (status != PaymentStatus.SUCCESS) {
            return RefundResult.error("订单状态不允许退款");
        }
        
        // 根据支付类型处理退款
        try {
            switch (record.getType()) {
                case "alipay":
                    return processAlipayRefund(record, amount);
                case "wechat":
                    return processWechatRefund(record, amount);
                default:
                    return RefundResult.error("不支持的支付方式");
            }
        } catch (Exception e) {
            return RefundResult.error("退款失败: " + e.getMessage());
        }
    }
    
    // 以下是具体支付方式的实现方法
    private PaymentResult createAlipayPayment(PaymentRecord record, PaymentConfig config) {
        // 实现支付宝支付逻辑
        return PaymentResult.success(record.getOrderId(), "支付宝支付链接");
    }
    
    private PaymentResult createWechatPayment(PaymentRecord record, PaymentConfig config) {
        // 实现微信支付逻辑
        return PaymentResult.success(record.getOrderId(), "微信支付链接");
    }
    
    private PaymentStatus queryAlipayStatus(PaymentRecord record) {
        // 实现支付宝状态查询逻辑
        return PaymentStatus.PENDING;
    }
    
    private PaymentStatus queryWechatStatus(PaymentRecord record) {
        // 实现微信支付状态查询逻辑
        return PaymentStatus.PENDING;
    }
    
    private RefundResult processAlipayRefund(PaymentRecord record, BigDecimal amount) {
        // 实现支付宝退款逻辑
        return RefundResult.success("退款成功");
    }
    
    private RefundResult processWechatRefund(PaymentRecord record, BigDecimal amount) {
        // 实现微信支付退款逻辑
        return RefundResult.success("退款成功");
    }
    
    /**
     * 支付配置类
     */
    public static class PaymentConfig {
        private final String appId;
        private final String appKey;
        private final String appSecret;
        private final boolean sandbox;
        
        public PaymentConfig(String appId, String appKey, String appSecret, boolean sandbox) {
            this.appId = appId;
            this.appKey = appKey;
            this.appSecret = appSecret;
            this.sandbox = sandbox;
        }
        
        public String getAppId() {
            return appId;
        }
        
        public String getAppKey() {
            return appKey;
        }
        
        public String getAppSecret() {
            return appSecret;
        }
        
        public boolean isSandbox() {
            return sandbox;
        }
    }
    
    /**
     * 支付记录类
     */
    public static class PaymentRecord {
        private final String orderId;
        private final String type;
        private final BigDecimal amount;
        private final String subject;
        private final String description;
        private final LocalDateTime createTime;
        
        public PaymentRecord(String orderId, String type, BigDecimal amount, String subject, String description, LocalDateTime createTime) {
            this.orderId = orderId;
            this.type = type;
            this.amount = amount;
            this.subject = subject;
            this.description = description;
            this.createTime = createTime;
        }
        
        public String getOrderId() {
            return orderId;
        }
        
        public String getType() {
            return type;
        }
        
        public BigDecimal getAmount() {
            return amount;
        }
        
        public String getSubject() {
            return subject;
        }
        
        public String getDescription() {
            return description;
        }
        
        public LocalDateTime getCreateTime() {
            return createTime;
        }
    }
    
    /**
     * 支付结果类
     */
    public static class PaymentResult {
        private final boolean success;
        private final String orderId;
        private final String paymentUrl;
        private final String error;
        
        private PaymentResult(boolean success, String orderId, String paymentUrl, String error) {
            this.success = success;
            this.orderId = orderId;
            this.paymentUrl = paymentUrl;
            this.error = error;
        }
        
        public static PaymentResult success(String orderId, String paymentUrl) {
            return new PaymentResult(true, orderId, paymentUrl, null);
        }
        
        public static PaymentResult error(String error) {
            return new PaymentResult(false, null, null, error);
        }
        
        public boolean isSuccess() {
            return success;
        }
        
        public String getOrderId() {
            return orderId;
        }
        
        public String getPaymentUrl() {
            return paymentUrl;
        }
        
        public String getError() {
            return error;
        }
    }
    
    /**
     * 退款结果类
     */
    public static class RefundResult {
        private final boolean success;
        private final String message;
        private final String error;
        
        private RefundResult(boolean success, String message, String error) {
            this.success = success;
            this.message = message;
            this.error = error;
        }
        
        public static RefundResult success(String message) {
            return new RefundResult(true, message, null);
        }
        
        public static RefundResult error(String error) {
            return new RefundResult(false, null, error);
        }
        
        public boolean isSuccess() {
            return success;
        }
        
        public String getMessage() {
            return message;
        }
        
        public String getError() {
            return error;
        }
    }
    
    /**
     * 支付状态枚举
     */
    public enum PaymentStatus {
        PENDING,    // 待支付
        SUCCESS,    // 支付成功
        FAILED,     // 支付失败
        REFUNDED,   // 已退款
        NOT_FOUND,  // 订单不存在
        ERROR       // 查询错误
    }
} 